HPI Baja Lower Rear Skirt Aluminium BJ903R by GPM  [BJ903R]

Lower rear alloy skirt for HPI Baja chassis

The BJ903R aluminium rear skirt is an aftermarket replacement crafted to reinforce the rear lower body on HPI Baja models. It attaches at the standard body or bumper mounts to create a more rigid rear edge that helps resist flex and wear on abrasive tracks.

Installation aligns with common Baja body hardware locations and usually reuses the truck's existing posts and screws. Typical fitting involves removing the rear shell, positioning the skirt on the mounting tabs, and fastening with original or supplied hardware. No special workshop gear is required beyond basic hex tools.

Adding this rigid skirt changes how the rear body behaves aerodynamically and how debris is moved away from the bumper area. Start with your normal suspension and tyre setup, then trial the vehicle to see how stiffness affects handling and adjust shocks or toe settings to tune rear traction.

A practical upgrade for drivers wanting a stiffer, more durable rear lower body; confirm fitment on your shell before painting or final work.